Calcium Vapor Reduction of Niobium Oxide Compounds

被引：1
作者：
Kryzhanov, M. V. [1 ]
Orlov, V. M. [1 ]
机构：
[1] Russian Acad Sci, Kola Sci Ctr, Tananaev Inst Chem & Technol Rare Elements & Miner, Fed Res Ctr, Apatity 184209, Murmansk Oblast, Russia
来源：
INORGANIC MATERIALS | 2023年 / 59卷 / 11期
关键词：
niobium; powder; calciothermic reduction; niobium pentoxide; magnesium niobate; adiabatic temperature; specific surface area; porosity; MAGNESIOTHERMIC REDUCTION; CALCIOTHERMIC REDUCTION; POWDER; TANTALUM; MAGNESIUM;
D O I：
10.1134/S0020168523110079
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Calcium vapor reduction of niobium oxide compounds has been studied at temperatures from 1023 to 1123 K. The adiabatic temperature of calcium reduction of niobium pentoxide (3020 K) and the Mg4Nb2O9 niobate (2525 K) has been determined by thermodynamic modeling with the TERRA software suite. We have assessed the effects of process temperature, reduction time, and precursor powder particle size on the degree of reduction, specific surface area, and pore structure of the niobium powders.
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收藏
页码：1250 / 1260
页数：11
相关论文
共 33 条
[11]   Production of niobium powder by preform reduction process using various fluxes and alloy reductant [J].
Okabe, TH ;
Iwata, S ;
Imagunbai, M ;
Mitsuda, Y ;
Maeda, M .
ISIJ INTERNATIONAL, 2004, 44 (02) :285-293
[12]   Formation of the Pore Structure of Tantalum and Niobium Powders during Magnesiothermic Reduction of Lithium Tantalate and Lithium Niobate [J].
Orlov, V. M. ;
Kryzhanov, M. V. ;
Kiselev, E. N. .
INORGANIC MATERIALS, 2020, 56 (09) :934-940
[13]   Magnesium Reduction of Niobium Oxide Compounds in the Combustion Regime [J].
Orlov, V. M. ;
Kryzhanov, M. V. .
INORGANIC MATERIALS, 2019, 55 (06) :563-567
[14]   Niobium Powders of Mesoporous Structure [J].
Orlov, V. M. ;
Kryzhanov, M. V. ;
Knyazeva, A. I. ;
Osaulenko, R. N. .
PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES, 2018, 54 (05) :782-787
[15]   Influence of the precursor composition and the reduction conditions on the characteristics of magnesium-thermic niobium powders [J].
Orlov V.M. ;
Kryzhanov M.V. .
Russian Metallurgy (Metally), 2016, 2016 (07) :596-601
[16]   Production of tantalum powders by the magnesium reduction of tantalates [J].
Orlov V.M. ;
Kryzhanov M.V. .
Russian Metallurgy (Metally), 2015, 2015 (07) :590-593
[17]   Magnesium-vapor reduction of niobium oxide compounds [J].
Orlov, V. M. ;
Kryzhanov, M. V. ;
Kalinnikov, V. T. .
DOKLADY CHEMISTRY, 2015, 465 :257-260
[18]   Thermodynamic modeling of the magnesiothermic reduction of magnesium and lithium tantalates [J].
Orlov, V. M. ;
Kryzhanov, M. V. .
INORGANIC MATERIALS, 2015, 51 (06) :618-622
[19]   Magnesium-Thermal Preparation of Niobium Powders [J].
Orlov, V. M. ;
Sukhorukov, V. V. .
RUSSIAN METALLURGY, 2010, 2010 (03) :168-173
[20]   Metallic Niobium Powder Reduced by Atmospheric Magnesium Gas with Niobium Pentoxide Powder [J].
Park, Su-Jin ;
Hwang, Seon-Min ;
Wang, Jei-pil ;
Son, Young-Guk ;
Lee, Dong-Won .
MATERIALS TRANSACTIONS, 2021, 62 (01) :34-40
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